Book excerpt: In this landmark work, Ernst Troeltsch offers a history of Christian ethics. This expansive volume relates Christian ethical ideas to the changing structures of church and society from the period of early Christianity to the end of the eighteenth century. Troeltsch's classic work, first published in 1931, continues to speak to the present condition of the church and culture. The Library of Theological Ethics series focuses on what it means to think theologically and ethically. It presents a selection of important and otherwise unavailable texts in easily accessible form. Volumes in this series will enable sustained dialogue with predecessors though reflection on classic works in the field.